Power supply and charger system for bicycle

ABSTRACT

A bicycle power supply and charger system is disclosed to include a dynamo adapted to generate power supply upon running of the bicycle, a rectifier output voltage regulator adapted to convert output power of the dynamo into the desired DC output power, an electric connector adapted to receive a personal mobile electric apparatus and to transmit the DC output power from the rectifier output voltage regulator to the personal mobile electric apparatus, and a battery charger connectable to the electric connector and adapted to charge the battery of a personal mobile electric apparatus.

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] The present invention relates to bicycles and, more particularlyto a power supply and charger system for use in a bicycle to generatepower supply upon running of the bicycle and, to charge the battery of apersonal mobile electric apparatus.

[0003] 2. Description of the Related Art

[0004] In order to save energy and to reduce pollution, many peoplerecommend the use of a bicycle as one's personal transportation vehicle.People may exercise the body by riding a bicycle. Further, riding abicycle in the wild field is the favorite recreation of many people.When riding a bicycle outdoors, the rider may carry a cellulartelephone, radio, PDA, or any of a variety of personal mobile electricapparatus. When battery low, the personal mobile electric apparatusbecomes unable to work. It is inconvenient to carry supplementarybattery for one's personal mobile electric apparatus when riding abicycle.

SUMMARY OF THE INVENTION

[0005] The present invention has been accomplished under thecircumstances in view. According to one aspect of the present invention,the power supply and charger system comprises a dynamo adapted togenerate power supply upon running of the bicycle, a rectifier outputvoltage regulator adapted to convert output power of the dynamo into thedesired DC output power, and an electric connector adapted to receive apersonal mobile electric apparatus and to transmit the DC output powerfrom the rectifier output voltage regulator to the personal mobileelectric apparatus. According to another aspect of the presentinvention, a battery charger is provided for connection to the electricconnector to charge the battery of a personal mobile electric apparatus.

BRIEF DESCRIPTION OF THE DRAWINGS

[0006]FIG. 1 is an installed view of the present invention showing thepower supply and charger system installed in a bicycle.

[0007]FIG. 2 is a circuit diagram of the present invention.

[0008]FIG. 3 is a circuit block diagram of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0009] Referring to FIGS. 1˜3, the present invention comprises dynamo 1,a rectifier output voltage regulator 2, and a cable 15.

[0010] The dynamo 1 is installed in a bicycle 10 at one side of thefront wheel 11 (keeping the rotor wheel of the dynamo 1 in close contactwith the front wheel 11). During running of the bicycle 10, the frontwheel 11 rotates the rotor wheel of the dynamo 1, causing the dynamo 1to generate power for the bicycle lamp 12. An electric wire 13 isconnected between the dynamo 1 and the rectifier output voltageregulator 2, for enabling the rectifier output voltage regulator 2 toreceive output power supply from the dynamo 1 and to convert receivedpower supply into the desired DC voltage. The cable 14 has one endconnected to the output end of the rectifier output voltage regulator 2,and the other end terminating in an electric connector 15 connectable tothe power jack of a personal mobile electric apparatus (for example, acellular telephone, walkie-talkie, radio, PDA, or the like) 3. A batterycharger 30 may be connected to the electric connector 15 to charge thebattery of a personal mobile electric apparatus 3. The battery charger30 is mountable to the handlebars of the bicycle 10. Further, a selectorswitch 16 is provided for switching output of the dynamo 1 between thebicycle lamp 12 and the rectifier output voltage regulator 2 andcontrolling voltage output of the rectifier output voltage regulator 2.

[0011] After installation of the power supply and charger system in thebicycle 10, the personal mobile electric apparatus 3 is put in thebattery charger 30, and the switch 16 is switched to the rectifieroutput voltage regulator 2 and set in the position subject to thedesired output voltage level. When riding the bicycle, the output powerof the dynamo 1 is rectified by the rectifier output voltage regulator 2and converted into the desired working voltage to charge the personalmobile electric apparatus 3 through the battery charger 30 via theelectric connector 15.

[0012] A prototype of power supply and charger system for bicycle hasbeen constructed with the features of FIGS. 1˜3. The power supply andcharger system for bicycle functions smoothly to provide all of thefeatures discussed earlier.

[0013] Although a particular embodiment of the invention has beendescribed in detail for purposes of illustration, various modificationsand enhancements may be made without departing from the spirit and scopeof the invention. Accordingly, the invention is not to be limited exceptas by the appended claims.

What the invention claimed is:
 1. A power supply and charger systeminstalled in a bicycle and adapted to generate power supply and tocharge the battery charger of a personal mobile electric apparatusconnected thereto, the power supply and charger system comprising: adynamo adapted to generate power supply upon running of the bicycle; arectifier output voltage regulator electrically connected to said dynamoand adapted to convert output power of said dynamo into a predeterminedDC output power; and an electric connector electrically connected tosaid rectifier output voltage regulator and adapted to receive apersonal mobile electric apparatus and to transmit said DC output powerto the personal mobile electric apparatus.
 2. The power supply andcharger system as claimed in claim 1 further comprising a batterycharger connectable to said electric connector for charging the batteryof a personal mobile electric apparatus with said working voltage. 3.The power supply and charger system as claimed in claim 1 furthercomprising switch means adapted to selectively control output voltagelevel of said rectifier output voltage regulator.
 4. The power supplyand charger system as claimed in claim 1 further comprising switch meansadapted to switch output power supply of said dynamo between saidrectifier output voltage regulator and a bicycle lamp of said bicycle.